Check your Software Update panel - it's out there! This is from the Read Me:
"The 10.0.4 Update delivers a significant number of improvements for USB devices including additional external device support for iTunes CD burning, improved battery life for many PowerBook G3 systems, and Classic compatibility improvements. This update also provides the latest security updates to OpenSSH and 'sudo' services and includes support for Apple's newest digital flat-panel, the 17-inch Apple Studio Display."
The list of modified files is way too long to post here -- you can see it yourself by doing this from the terminal:
[prompt] cd /Library/Receipts/10.0.4Update.pkg/Contents/ResourcesDon't type the [prompt], that's just my representation of your command-line prompt. This will show you all the updated files installed by the updater.
[prompt] lsbom 10.0.4Update.bom
Mac OS X Hints
http://hints.macworld.com/article.php?story=20010621170443810